Not really. If you had a single volume control, you'd only have one tone control on the common output from the selector switch. So no real reason to have more than one, But you could have one per pickup if you wanted to sculpt the tone of each pickup differently.

It's easy to add a cap+resistor in series afterwards, so you could start without and see where you are before you decide whether one or both pickups need some taming.

Standard resistor values don't include 250k, so you have a choice of 240k or 270k on either side. 240k will be slightly darker than 270k. You can of course use any value resistor you want, with higher values meaning a bit brighter and lower values a bit duller. You could go up to 2 meg to get a very small amount of treble loss.

Too much below 240k and the cap value also makes itself more obvious. with higher values than 0.047uF giving a darker tone with a lower treble roll-off point and smaller values (such as 0.022uF typically found on humbuckers) giving a brighter tone with a higher treble roll-off point.

There is no right or wrong here, just personal taste and general values between which most people agree sound OK. Resistors and caps are cheap (especially when bought in bulk mixed bags) and some crocodile clips to hold things together lets you test things out before getting the soldering iron out.